Home / 28,713.74-43,071.21-8,991.86

Finding the Fourth Proportional to 28,713.74, 43,071.21 and 8,991.86

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Solution

The fourth proportional to 28,713.74, 43,071.21 and 8,991.86 is: 13,487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,713.74 : 43,071.21 = 8,991.86 : x
  2. Step 2: Convert to fraction form
    28,713.74/43,071.21 = 8,991.86/x
  3. Step 3: Cross multiply
    28,713.74x = 43,071.21 × 8,991.86
  4. Step 4: Simplify right side
    28,713.74x = 387,290,074.99
  5. Step 5: Solve for x
    x = 387,290,074.99/28,713.74
  6. Step 6: Final answer
    x = 13,487.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.